HTP Pro Pulse 300, Owner'S Manual

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Fig. 10
The Pulse symbol in Fig. 10 indicates that the Pro Pulse
300 is now in SMAW-P (pulsed Stick) mode. To turn
the pulse feature off, go back into the advanced pulse
settings menu, and turn the Pulse option OFF.
In stick welding mode, you can also activate and
deactivate the V.R.D, or the Voltage Reduction
Device—a system which reduces the no load voltage.
For more information on the V.R.D. please reference the
Glossary , which begins on Page 34 .
TIG Welding
Press and release button A ( Fig. 4) as many times as
needed to select the TIG welding mode.
TIG is DC TIG lift-arc ignition. This welding process
requires DCEN (electrode negative). Plug the ground
cable and clamp assembly into the positive female Dinse
receptacle ( Fig. 2, Pos. Y ), plug the TIG welding torch
into the negative female Dinse receptacle ( Fig. 2, Pos.
Z ), and connect the TIG welding torch gas hose to the
gas outlet ( Fig. 2, Pos. V ).
In order to initiate an arc and vary the amperage while
welding, a remote control, such as a foot pedal or a hand
control, is required. The remote control should be
plugged into the remote control and accessory receptacle
( Fig. 2, Pos. X ).
The TIG welding process requires the use of 100%
Argon gas. Install the flowmeter on your tank, and
connect the flowmeter to the Pro Pulse 300 with the
supplied gas hose. To connect the gas hose, fasten one
end of the gas hose to the flowmeter and the other to the
back of the welding machine ( Fig. 3, Pos. Q ). The gas
hose connections should be a little bit more than finger
tight; however, be careful not to over-tighten the
connections. About a 15-20 CFH flow rate is a good
starting point; although this ultimately depends on the
cup style and size you are using.
When the machine is turned on and in TIG mode, the
display will read an amperage number (e.g., 200 A).
By pressing and releasing button E ( Fig. 4 ) you can
access the setup menu ( Fig. 11; Note: The gear symbol
refers to setup ).
Fig. 11
If a foot pedal is used, we recommend setting the slope
down time to 0.1 seconds. To adjust the slope down
time, turn right encoder G ( Fig. 4 ) until the display
shows the desired duration ( Fig. 12 ).
Fig. 12
To adjust pre– and post-flow gas options, press and
release button E ( Fig. 4 ) to enter the next scr een ( Fig.
13 ).
Fig. 13
By turning right encoder G ( Fig. 4 ), you can adjust the
pre-flow gas duration. Pressing and releasing button C
( Fig. 4 ) moves the arrow from pre– to post-flow and
right encoder G now adjusts the post-flow gas duration.
In most TIG applications, 5-10 seconds of post-flow gas
is recommended.